MCP6021/2/3/4
Note:
Unless otherwise indicated, T
A
= +25°C, V
DD
= +2.5V to +5.5V, V
SS
= GND, V
CM
= V
DD
/2, R
L
= 10 kΩ to V
DD
/2,
V
OUT
≈
V
DD
/2 and C
L
= 60 pF.
130
DC Open-Loop Gain (dB)
DC Open-Loop Gain (dB)
V
DD
= 5.5V
120
110
V
DD
= 2.5V
100
90
80
100
1.E+02
120
115
110
105
100
95
90
1.E+03
1.E+04
1.E+05
V
DD
= 5.5V
V
DD
= 2.5V
1k
10k
100k
-50
-25
0
25
50
75
100
125
Load Resistance ( )
Ambient Temperature (°C)
FIGURE 2-19:
Load Resistance.
120
DC Open-Loop Gain vs.
FIGURE 2-22:
Temperature.
14
Gain Bandwidth Product
(MHz)
DC Open-Loop Gain vs.
DC Open-Loop Gain (dB)
105
90
75
60
Phase Margin, G = +1
45
30
V
DD
= 5.0V
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Common Mode Input Voltage (V)
15
0
Phase Margin, G = +1 (°)
Phase Margin, G = +1 (°)
Gain Bandwidth Product
V
CM
= V
DD
/2
110
V
DD
= 5.5V
100
90
80
70
0.00
V
DD
= 2.5V
12
10
8
6
4
2
0
0.05
0.10
0.15
0.20
0.25
0.30
Output Voltage Headroom (V);
V
DD
- V
OH
or V
OL
- V
SS
FIGURE 2-20:
Small Signal DC Open-Loop
Gain vs. Output Voltage Headroom.
10
9
8
7
6
5
4
3
2
1
0
-50
100
90
80
70
60
50
40
30
20
10
0
100 125
FIGURE 2-23:
Gain Bandwidth Product,
Phase Margin vs. Common Mode Input Voltage.
14
105
Gain Bandwidth Product
90
75
Phase Margin, G = +1
60
45
30
V
DD
= 5.0V
V
CM
= V
DD
/2
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Output Voltage (V)
15
0
Gain Bandwidth Product
(MHz)
Phase Margin, G = +1 (°)
Gain Bandwidth Product
(MHz)
12
10
8
6
4
2
0
GBWP, V
DD
= 5.5V
GBWP, V
DD
= 2.5V
PM,
V
DD
= 2.5V
PM,
V
DD
= 5.5V
-25
0
25
50
75
Ambient Temperature (°C)
FIGURE 2-21:
Gain Bandwidth Product,
Phase Margin vs. Temperature.
FIGURE 2-24:
Gain Bandwidth Product,
Phase Margin vs. Output Voltage.
DS21685B-page 8
2003 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
